How much do you want one on Nov. 3rd? You might consider what others have done in past years and open a new account with one of the launch carriers and then cancel within 3 days and keep the iPhone X. This option requires you to pay full price.
Thanks for the info. I should clarify that the TMobile iPhones do work on Verizon's LTE network, but they won't work on Verizon if you drop the LTE signal since they don't have the CDMA modems. They won't work on Sprint at all.